Dispersive white-light spectral interferometry to measure distances and displacements

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F47813059%3A19240%2F02%3A20000003" target="_blank" >RIV/47813059:19240/02:20000003 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Dispersive white-light spectral interferometry to measure distances and displacements
Original language description
Processing of the spectral interferograms recorded at the output of a dispersive Michelson interferometer by a low-resolution spectrometer is performed with a knowledge of both dispersion and thickness of the interferometer optical element (beam splitteror optical sample). The recorded spectral interferograms, including the equalization wavelengths, are fitted by using a least-squares method to the theoretical interferograms to obtain the optical path differences (OPDs) between interfering beams. From the OPDs, which vary with both the wavelength-dependent refractive index and the thickness of fused-silica optical element, distances or displacements are determined. Within two different configurations of a dispersive Michelson interferometer we show that the range of measurable distances depends on the thickness of the optical element. We also confirm by this measurement technique that errors of manually adjusted 10 micro m dispalcements of the interferometer mirror are below 1 micro m.
Czech name
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Czech description
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Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BH - Optics, masers and lasers
OECD FORD branch
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Project
<a href="/en/project/GA202%2F01%2F0077" target="_blank" >GA202/01/0077: Waveguiding and magneto-optical reflection effects in thin films and low-dimensional systems</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2002
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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